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Jim Howard demonstrates alternating and direct current

Presenter Jim Howard, demonstrating the differences between alternating and direct current with assistance from David and Celeste Hyer and Tom Peaco
Presenter Jim Howard, demonstrating the differences between alternating and direct current with assistance from David and Celeste Hyer and Tom Peaco

Read the Winter 2019 newsletter for the illustration’s original context.

Download the original newsletter (PDF).

About this photograph

Caption reproduced from the Winter 2019 newsletter. References such as “today,” “new,” or “upcoming” describe that publication, not the present. The newsletter year is not necessarily the date of the photograph.

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703 × 527 pixels · JPEG
Catalog sources
Caption in the Winter 2019 society newsletter; Newsletter illustration
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